Added test for accidentally fixed issue #953
Added test for accidentally fixed issue #953

In [1]: integrate(cos(asin(x)), x)
Out[1]:
               ⎽⎽⎽⎽⎽⎽⎽⎽
              ╱      2
asin(x)   x⋅╲╱  1 - x
─────── + ─────────────
   2            2

abhiii5459/sympy,sahmed95/sympy,aktech/sympy,saurabhjn76/sympy,cswiercz/sympy,ahhda/sympy,Mitchkoens/sympy,lidavidm/sympy,shikil/sympy,MridulS/sympy,ChristinaZografou/sympy,chaffra/sympy,kaushik94/sympy,bukzor/sympy,AunShiLord/sympy,aktech/sympy,VaibhavAgarwalVA/sympy,debugger22/sympy,meghana1995/sympy,Shaswat27/sympy,dqnykamp/sympy,Vishluck/sympy,rahuldan/sympy,pbrady/sympy,souravsingh/sympy,minrk/sympy,Mitchkoens/sympy,lindsayad/sympy,Davidjohnwilson/sympy,jamesblunt/sympy,atsao72/sympy,postvakje/sympy,kevalds51/sympy,cccfran/sympy,rahuldan/sympy,AkademieOlympia/sympy,kaichogami/sympy,sahmed95/sympy,beni55/sympy,debugger22/sympy,kmacinnis/sympy,maniteja123/sympy,ahhda/sympy,debugger22/sympy,mafiya69/sympy,hazelnusse/sympy-old,skidzo/sympy,kaichogami/sympy,Curious72/sympy,drufat/sympy,sahilshekhawat/sympy,fperez/sympy,kaushik94/sympy,saurabhjn76/sympy,dqnykamp/sympy,Arafatk/sympy,maniteja123/sympy,KevinGoodsell/sympy,minrk/sympy,shipci/sympy,ga7g08/sympy,ChristinaZografou/sympy,ahhda/sympy,Gadal/sympy,VaibhavAgarwalVA/sympy,vipulroxx/sympy,lidavidm/sympy,Vishluck/sympy,abloomston/sympy,jaimahajan1997/sympy,wanglongqi/sympy,iamutkarshtiwari/sympy,MridulS/sympy,jamesblunt/sympy,kmacinnis/sympy,yukoba/sympy,atsao72/sympy,AkademieOlympia/sympy,pandeyadarsh/sympy,jerli/sympy,amitjamadagni/sympy,meghana1995/sympy,drufat/sympy,toolforger/sympy,sampadsaha5/sympy,garvitr/sympy,grevutiu-gabriel/sympy,mcdaniel67/sympy,asm666/sympy,kumarkrishna/sympy,kumarkrishna/sympy,pandeyadarsh/sympy,bukzor/sympy,oliverlee/sympy,kmacinnis/sympy,amitjamadagni/sympy,skidzo/sympy,wyom/sympy,lindsayad/sympy,Sumith1896/sympy,pernici/sympy,souravsingh/sympy,MechCoder/sympy,chaffra/sympy,beni55/sympy,AkademieOlympia/sympy,yukoba/sympy,kevalds51/sympy,tovrstra/sympy,hargup/sympy,Curious72/sympy,Sumith1896/sympy,wanglongqi/sympy,sunny94/temp,Designist/sympy,grevutiu-gabriel/sympy,mafiya69/sympy,mafiya69/sympy,jbbskinny/sympy,jaimahajan1997/sympy,garvitr/sympy,Shaswat27/sympy,cccfran/sympy,pbrady/sympy,dqnykamp/sympy,abloomston/sympy,hrashk/sympy,liangjiaxing/sympy,wyom/sympy,ga7g08/sympy,mcdaniel67/sympy,maniteja123/sympy,MridulS/sympy,hargup/sympy,saurabhjn76/sympy,yashsharan/sympy,sunny94/temp,liangjiaxing/sympy,oliverlee/sympy,hrashk/sympy,madan96/sympy,cswiercz/sympy,emon10005/sympy,atsao72/sympy,lidavidm/sympy,vipulroxx/sympy,bukzor/sympy,shipci/sympy,madan96/sympy,shipci/sympy,hargup/sympy,meghana1995/sympy,pbrady/sympy,toolforger/sympy,Davidjohnwilson/sympy,jaimahajan1997/sympy,vipulroxx/sympy,MechCoder/sympy,mattpap/sympy-polys,VaibhavAgarwalVA/sympy,pandeyadarsh/sympy,jbaayen/sympy,yashsharan/sympy,iamutkarshtiwari/sympy,abhiii5459/sympy,Arafatk/sympy,ga7g08/sympy,moble/sympy,cccfran/sympy,Gadal/sympy,chaffra/sympy,souravsingh/sympy,atreyv/sympy,cswiercz/sympy,madan96/sympy,jerli/sympy,sahilshekhawat/sympy,abloomston/sympy,ChristinaZografou/sympy,toolforger/sympy,Designist/sympy,jerli/sympy,postvakje/sympy,iamutkarshtiwari/sympy,rahuldan/sympy,asm666/sympy,wyom/sympy,diofant/diofant,sunny94/temp,farhaanbukhsh/sympy,srjoglekar246/sympy,sampadsaha5/sympy,kevalds51/sympy,Mitchkoens/sympy,jamesblunt/sympy,moble/sympy,aktech/sympy,atreyv/sympy,Curious72/sympy,Shaswat27/sympy,AunShiLord/sympy,garvitr/sympy,Davidjohnwilson/sympy,grevutiu-gabriel/sympy,Titan-C/sympy,skirpichev/omg,hrashk/sympy,Titan-C/sympy,skidzo/sympy,atreyv/sympy,Arafatk/sympy,kaushik94/sympy,farhaanbukhsh/sympy,Titan-C/sympy,sahilshekhawat/sympy,emon10005/sympy,jbbskinny/sympy,Vishluck/sympy,Designist/sympy,kumarkrishna/sympy,liangjiaxing/sympy,jbbskinny/sympy,drufat/sympy,ryanGT/sympy,flacjacket/sympy,yukoba/sympy,wanglongqi/sympy,emon10005/sympy,lindsayad/sympy,shikil/sympy,mcdaniel67/sympy,oliverlee/sympy,Sumith1896/sympy,Gadal/sympy,sahmed95/sympy,sampadsaha5/sympy,moble/sympy,kaichogami/sympy,beni55/sympy,abhiii5459/sympy,farhaanbukhsh/sympy,AunShiLord/sympy,shikil/sympy,postvakje/sympy,yashsharan/sympy,hazelnusse/sympy-old,MechCoder/sympy,asm666/sympy